Machine for covering mattresses made of foamed material, rubber, polyester and the like

ABSTRACT

A machine for covering mattress cores of foamed material, rubber and polyester featuring two perpendicularly disposed drive belts whose width corresponds to the height of the mattress and which converge in the direction of travel of the mattress, the disposition of the aforementioned drive belts permitting the mattress core to be compressed throughout its width enabling fabric to be pulled up on the nozzle without difficulty as sticking of the mattress core to the inside of the nozzle during the covering process is prevented. Furthermore, laterally disposed drive belts are employed such that the corners of the mattress core leave the nozzle first and thereby fill out the corners of the cover fabric in the correct position eliminating time-consuming adjustment and beating into desired shape and appropriate height and width adjustments make it possible for the same machine to cover mattress cores of different widths and thicknesses.

United States Patent 72] Inventor Josef Rosler Turbinenstrasse 10, 68 Mannheim 41, Germany [21] Appl. No. 57,956 [22] Filed July 24, 1970 [45] Patented Jan. 11, 1972 [54] MACHINE FOR COVERING MATTRESSES MADE OF FOAMED MATERIAL, RUBBER, POLYESTER AND THE LIKE 1 Claim, 2 Drawing Figs.

{52] U.S. Cl 53/125 [51] Int. Cl B65b 63/02 [50] Field of Search 53/125 [5 6] References Cited UNITED STATES PATENTS 2,693,304 11/1954 Davis etal. 53/125 3,319,394 5/1967 Talalay et al. 53/125 X Primary Examiner-Travis S. McGehee Attorney-Brufsky, Staas, Breiner and Halsey ABSTRACT: A machine for covering mattress cores of foamed material, rubber and polyester featuring two perpendicularly disposed drive belts whose width corresponds to the height of the mattress and which converge in the direction of travel of the mattress, the disposition of the aforementioned drive belts permitting the mattress core to be compressed throughout its width enabling fabric to be pulled up on the nozzle without difficulty as sticking of the mattress core to the inside of the nozzle during the covering process is prevented. Furthermore, laterally disposed drive belts are employed such that the corners of the mattress core leave the nozzle first and thereby fill out the corners of the cover fabric in the correct position eliminating time-consuming adjustment and beating into desired shape and appropriate height and width adjustments make it possible for the same machine to cover mattress cores of different widths and thicknesses.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mattress-covering machine wherein cores made of foam material, rubber, polyester and the like are continuously covered with fabric.

2. State of the Prior Art For many years machines have been used to cover conventional spring mattress cores. Such conventional covering machines have a nozzle, usually consisting of adjustable plates, over which the covering material must be pulled. If such conventional machines are used with mattresses of foamed material, rubber or polyester, the cores stick to the walls of the sheet, inhibiting forward movement and covering. Attempts have been made to modify existing covering machines but for the most part these efforts have been unsuccessful.

SUMMARY OF THE INVENTION In the present invention, a machine for covering mattress cores of foamed material, rubber and polyester is disclosed featuring two perpendicularly disposed drive belts whose width corresponds to the height of the mattress and which converge in the direction of travel of the mattress. The disposition of the aforementioned drive belts makes it possible to compress the mattress core throughout its width permitting fabric to be pulled up on the nozzle without difficulty as sticking of the mattress core to the inside of the nozzle during the covering process is prevented. Furthermore, laterally disposed drive belts are employed such that the comers of the mattress core leave the nozzle first and thereby fill out the corners of the cover fabric in the correct position eliminating time-consuming adjustment and beating into desired shapes. Appropriate height and width adjustments make it possible for the same machine to cover mattress cores of different widths and thicknesses.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal section of the mattress covering machine of the present invention; and

FIG. 2 is a top view thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENT The mattress-covering machine of the present invention comprises two frame walls 1 between which are positioned separate adjustable drive belt boxes 2 and 3, which, as illustrated in FIG. 2, taper with reference to the nozzle. The belt 4 delivers the mattress core to drive belts 5, suitably driven by drive motors 6 and 7, as illustrated in FIG. 2, suitably suspended below drive boxes 2 and 3;

Hand wheel 8, as illustrated in FIG. 2, is used to move drive belt box 3 through threaded spindle 9, carriage I and spindle 1 1.

Upper nozzle sheet I2 is rigidly connected to carriage 10, as illustrated in FIG. I, which, in turn, travels on rail 13 which is guided in a groove on the frame wall and displaceable upwardly and downwardly by means of pinion gears 14 and I and lever 16.

As will be apparent, the adjustment in height of lower noz zle sheet 17, as illustrated in FIG. 1, is accomplished by means of rail 18 and gear 20 while the adjustment in width of lower nozzle sheet 17 occurs through carriage 19.

In conventional manner, a foot switch operates all motor switches.

Reliable guiding of mattress cores of varying thicknesses and densities is accomplished with guide rolls 21 located below upper nozzle sheet 12 and guide rolls 22, which may be adjustable in height, located above lower nozzle sheet 17.

lclaim: I. A machine for covering mattresses made of foamed material, rubber and polyester, comprising first and second drive belts, means disposing said drive belts perpendicularly permitting same to converge in the direction of travel of the mattress core, means displacing said drive belts, as desired, upper and lower nozzle sheets, means mounting said sheets for vertical adjustment and first guide rolls together with means mounting same below said upper nozzle sheet and second guide rolls, together with means mounting same above said lower nozzle sheet and means adjusting the height of said guide rolls. 

1. A machine for covering mattresses made of foamed material, rubber and polyester, comprising first and second drive belts, means disposing said drive belts perpendicularly permitting same to converge in the direction of travel of the mattress core, means displacing said drive belts, as desired, upper and lower nozzle sheets, means mounting said sheets for vertical adjustment and first guide rolls together with means mounting same below said upper nozzle sheet and second guide rolls, together with means mounting same above said lower nozzle sheet and means adjusting the height of said guide rolls. 